Security

I am working in dictionary program that depend on database file dic.mdb, the problem is:

when the user install my program he can find and access the db file...so he can use it out

of my program or copy it.... you know that in this type of programs the most important is

the database............ so please I want to protect my database file....I know that I can

put a password, hide or change the file extintion...but you know all that do not help..I saw

smiler programs but I could not find there database file
please reply to me or send the reply to: freehuman03@hotmail.com
thanks alot